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±§:W� T � s=:.a7 -E �6j E^'� - :r ,. Sew'•, " <br /> :P <br />•ss.. <br /> YM <br /> PROi3LUjSSMMUT REPORT <br /> Shell Service Station <br /> 7910 Lowcr Sacramento Road,Stockton,Calffamla <br /> Shell WIC No,204.75?A.M <br /> Delta Praj$ct No.40.88.147 <br /> Page 16 <br /> 0 G and Wate a ediat'o .-Based upon the concentration levels of petroleum constituents noted <br /> in the ground water samples collected from the monitoring wells on site,ground water remettiation <br /> is not warranted at this time. It should be noted that the highest concentration of benzene(1.1 <br /> ppb) detected in a ground water sample was from a sample collected from a monitoring writ <br /> located u <br /> pgradient of the former tank excavation,suggesting that the source of these low levels <br /> t <br /> Of petroleum constituents in the ground water could be from an off-site source. <br /> j; <br /> The ground water monitoring Program Proposed above should document any petroleum constituent <br /> migration front the soils to the ground waters if such a migration should occur, If the levels of <br /> petroleum constituents increase to a Imeel that warrants remediation,then a remedladon system <br /> would be implemented, <br /> 64 <br /> a <br /> i <br />